Turn-table center.



R. KHUEN & A. REIGHMANN.

TURN TABLE CENTER.

APPLIUATIOH FILED 11.12. 1907.

Patented Jan. 4, 1910.

2 SHEETS-SHEET l.

R. KHUEN & A. REIUHMANN. TURN TABLE OBNTER.

APPLIUATIDN FILED APB.12.1907.

2 sums-sum z.

Patented Jan. 4, 1910,

WITNESQES mun-rolls l iaxul (183ml: addlm k-WQ Mam RICHARD KHUEN, OFPITTSBURG, PENNSYLVANIA, AND ALBERT REICHMANN, 01:

CHICAGOfILLINOIS, AssroNons 'ro AMERICAN BRIDGE COMPANY, OF PITTSBURG,

PENNSYLVANIA,YA CORPORATION OF NEW JERSEY.

' roan-TABLE cmv'rnn.

Specification of Letters Patent.

Patented Jan. 4, 1910.

Application filed afiru 2, 190?. Serial No. 367,857.

. To all whom it may concern:

Be it known-that we, RICHARD KIrUnN, of Pittsburg, Allegheny county,Pennsylvania, and Ausnirr REICIIMANN, of'Chicago, Cook count Illinois,have invented a new and usefu Turn-Table Center, of which the followingis a'full, clear, and exact description, reference being bad totheaccompanying drawin s, forming part of this specification, in whicFigure 1 is a view showing one half of our improved turn table center inplan view and the other half with the upper plate removed to show thebearing rollers; and Fig. 2 is a view of the same partly in sideelevation and partly in section.

Our invention has relation to turn table centers, and is designed torovide an im proved arrangement of the hearing rollers which carry theload, and also to provide means for the more effective lubrication ofthe same and for the exclusion of dust.

Our invention consists in the novel construction, arrangement andcombination of parts, all substantially as hereinafter described andpointed out in the appended claims.

Referring to the drawings, the numeral 2 designates the base casting ofthe turn table center, 3 the rotatable'top plate or casting, and 4 thecap plate which supports the usual table bridge and table, (npt shown.)The base casting 2 is provided in its upper por tion with theopenannular troughfi, and the rotatable top plate 3 has in its under surfacea similar annular trou h 6, these two tlOl lghS forming a chamber or theseries of central, radially-arranged, bearing rollers 7. These rollersare arranged side by side, and are loosely journaled onthe pins 8, saidpins being seated in the outer and inner annular rings 9 and 10. Thesepins are inserted loosely through the outer ring 9, having heads 11 attheir outer ends, and their inner ends are formed with reduced threadedportions 12 which engage threaded openings in the inner ring 10.

10 designates a washer, which is interposed between the outer end ofeach roller and the outer ring.

The pins 8 connect the two rin to keep the rollers in roper relativepositions, without the use of connecting ribs, which would take up someof the space available for the rollers. The rollers 7 are also placedbetween the upper and lower annular bearing or track plates 13 and 14,which are made separate iroin the castings l and 3, so that they may beof harder metal. and also be readily renewed and replaced it' necessary.

The space around the rollers forms a lu- 'u'icant-conlaining chamberwhich may be supplied by means of a pipe 15 which extends upwardlythrough the central portion of the cap 4. The inner wall of thislubricant-containing chamber is sealed by the intcrfitting of the innerlip (3 of thh trough (5 within the inner lip or wall 5" of the lowertrough 5. The outer lips or Walls of these two troughs are made ofreduced thickness at the joint, as shown at 16, the upper reduced lipfitting within the lower one, as shown in Fig. 2. and the outer s de ofthe joint 01 opening between these lips bein covered by a dust guard orstrip 1?. By liecping oil up to line m-m, shown in Fig. 2, completelubrication of the bearings is assured, and dust and dirt are excludedtherefrom.

The cap 4 is provided with the usual rorlr- 8O ing hearing at 18 on the111F181 surface of the top plate 3,

The advantages of our inrezficu result from the manner in which thebraring rollers are arranged, so that they can be placed in position,and the pins inserted therethrough, and secured in the inner ring 10without the use of nuts or other fastening devices; also from theprovision of the separate bearing plates for the rollers,- and in theconstruction and arrangement of the lubricant containing chamber wherebycomplete lubrication of the rollers is insured.

Various changes may be made in the details of construction andarrangement, with out departing from the spirit and scope of ourinvention.

\Vhat we claim is 1. A turn table center, having a base portion and arotary top plate or portion, said portions having annular correspondingtroughs in their meeting faces, formed by projecting annular flangesfrom each portion, the flanges of the to portion lyin within the flangeson the ase, aseries o antifriction rollers in the chamber formed by saidtroughs, a tapered bearin or track plate for the said rollers in eacportion,

a supporting frame for the rollers, comprising an inner and outer ringand ins projecting throu h the rollers and t e rings, and a turntahlehearing cap loosely mount- 5 ed on the upper surface of the topplate;

substantially as described. 4

2. A turn table center, having a base portion' and a rotary top plate orportion, said portions having annular corresponding 10 troughs in theirmeeting faces, formed by projecting annular flanges from each portion,the flanges 0f the top portion lyin within the flanges on the base, aseries 0 antifrietion rollers in the chamber formed 15 by said troughs,a tapered hearing or track plate for the said rollers in each portion, asupporting frame for the rollers, comprising an inner and outer ring andpins pro ecting through the rollers and the rings, and an annular dustguard secured to the outer 2o flange of the top plate and extending overthe outer flange of the base; substantially as described.

In testimony whereof, we have hereunto set our hands.

R ICHARD KI-IUEN. ALBERT REICHMANN. Witnesses:

LAURENCE H. LEE, H. M. CORWIN.

